The movie begins with a retired professor Elango (Raghuvaran) coming back to his native village along with his daughter Charulatha (Mamta). He summons Sathyamoorthy(Vishal), a student from Chennai, to join him in his research on folk songs.

Sathyamoorthy's pleasing manners attracts Charulatha. Meanwhile, poll fever grips Tamil Nadu as general elections are announced. But, candidates are murdered one after another and a fear sets in among them. Many of them prefer to withdraw nominations. Citing lack of security to candidates, the State Election Commission prefers to postpone the elections. Meanwhile, the police manage to obtain clues in the series of murders and arrest Elango. In a flashback, it is revealed why Elango with the help of Sathyamoorthy goes out to murder the aspiring MLAs.

Sathyamoorthy along with his friends had studied in a college in Chennai where Elango was the professor. They come out with a pre-poll election survey which results in them incurring the wrath of the ruling party in the State. With the help of police, they let loose terror in the college and kill over 50 students.

Sathyamoorthy and Elango, who survive the attack, resolve to teach a lesson to the corrupt politicians.